# Settings

**Menu path:** main menu → **Settings** (opens full-screen **App Settings**)

## Rows

| Row | Control | Effect |
|-----|---------|--------|
| **Brightness** | Slider + value | PWM **backlight** (`setBrightness`) |
| **Theme** | Dark / Light | UI palette via `applyThemeToPalette` |
| **NeoPixel** | ON/OFF | WS2812 feedback when hardware present |
| **Auto Scan** | ON/OFF | Enables **both** background **Wi-Fi** and **BLE** auto-scan flags |

## Footer

- **Back** — leave settings (unsaved changes depend on whether you pressed Save; debounced save may still apply—use **Save** explicitly to persist).
- **Save** — writes **`/config/settings.json`** on SD (`SETTINGS_PATH` in `SettingsStore.h`).

## Touch calibration

Bounds are stored in the same settings file. Use [Touch Calibrate](Tools-Touch-Calibrate) to update them.

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